From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: create_on_open fails with "err=5/file:backend.c:498" References: From: Jens Axboe Message-ID: <185b7fb1-e59a-c0e4-9a8a-ed5a21b441e8@kernel.dk> Date: Wed, 3 Aug 2016 08:42:51 -0700 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: Srinivasa Chamarthy , fio@vger.kernel.org List-ID: On 08/02/2016 07:29 AM, Srinivasa Chamarthy wrote: > Hi All, > > With the latest version of FIO, i see that create_on_open failing > always with error "err=5/file:backend.c:498" > > # fio --name=test --directory=/testdata --nrfiles=10 --size=1g > --refill_buffers=1 --direct=1 --create_on_open=1 > test: (g=0): rw=read, bs=4K-4K/4K-4K/4K-4K, ioengine=psync, iodepth=1 > fio-2.13-28-g059b6 > Starting 1 process > fio: pid=8439, err=5/file:backend.c:498, func=full resid, > error=Input/output error > > test: (groupid=0, jobs=1): err= 5 (file:backend.c:498, func=full > resid, error=Input/output error): pid=8439: Tue Aug 2 10:24:08 2016 > cpu : usr=0.00%, sys=0.00%, ctx=1, majf=0, minf=57 > IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% > submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% > complete : 0=50.0%, 4=50.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% > issued : total=r=1/w=0/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0 > latency : target=0, window=0, percentile=100.00%, depth=1 > > Run status group 0 (all jobs): > > Disk stats (read/write): > dm-0: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, > aggrios=0/0, aggrmerge=0/0, aggrticks=0/0, aggrin_queue=0, > aggrutil=0.00% > sda: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00% > > # fio --version > fio-2.13-28-g059b6 > > The execution was on RHEL7.2 and CentOS7.2 Did that ever work for readable workloads? For a writeable workload it should be fine. -- Jens Axboe